When comparing Andale Mono vs Ubuntu Mono, the Slant community recommends Ubuntu Mono for most people. In the question“What are the best programming fonts?”Ubuntu Mono is ranked 6th while Andale Mono is ranked 23rd. The most important reason people chose Ubuntu Mono is:

Line thickness, shape, and spacing help you to recognize characters and words correctly the first time through, without your eyes having to skip back and re-read.